Insulating cut-out joint



(No Model.)

H. M. & R. DOUBLEDAY.

INSULATING GUT-OUT JOINT.

1%1ten'ed Apr. 30, 1889.

ve/z 227% UNITED STATES PATENT OFFICE.

HARRY M. DOFBLEDAY AND RUSSELL DOUBLEDAY, OF PITTSBURG, PENN SYLVANIA.

INSULATING CUT-OUT JOINT.

SPECIFICATION forming part of Letters Patent No. 402,420, dated April30, 1889.

Application tiled September 18, 1883. Serial No. 285,732. (No model.)

To @ZZ when?, it may concern:

De it known that we, HARRY M. DOUBLE- DAY and RUssELL DOUELEDAY,citizens of the United States, residing at Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a certain new andlinproved Insulating Cut-Out Joint, oi' which the following description,taken in connection with the accornpanying drawings, is a speciiication.

Our invention relatos to a combined cutout for incandescent electriclamps and insulatingjoint, which is intended to be intcrpoY latedbetween the gas-pipe terminal and gasxture or any other similarstructure.

The objects of our invention are to provide an article which will besimple, cheap, and effective, and at the saine time durable, easilyapplied, and neat in appearance; and with these ends in view weconstruct our device substantially as follows:

A brass sleeve adapted to screw over the gas-pipe terminal carries asurrounding insulating-jacl ct provided with a broad circumferentialila-nge for carrying the conductors and ordinary cut-out connections,while an outer brass sleeve surrounds the insulator and basa contractedlower end for the reception of the gas-bracket or continuation of thegas-pipe. A cap having a central opening for passage of lower end or'the outer sleeve conceals the connectors, is secured to the periphery oft ie insulatorflange, and has an insulating-bushing en one side, throughwhich the lamp-conductors pass at an angle, when they may be bent toretain the cap in position.

The novel features of our d evicc are particularly pointed out in theclaims, being ilirst fully described with. reference to the accom-)anying drawings, in whichw Figure l represents our device as applied`no an ordinary gas-hanger- Fig. Il is a top ,fiew of the devicedetached. Fig. lll is a ottom view of the saine with the cap renoved.Fig. IY is an axial section on the respect ively the gas-pipe terminaland any forni of gashanger.

3 is a brass sleeve having an ordinary-faced head, 4, adapting it toreceive a wrench for screwing it on the terminal, corresponding male andfemale threading being formed on the terminal and sleeve, respectively.This sleeve may also be provided with a shoulder for the abutment of theterminal, as shown, and is preferably made inwardly 'flaring at itslower end, whereby an enlarged end is formed for contact with the end otthe gaslixture, or, preferably, against a gasket, 3i, supported on theshoulder 9 ot the outer sleeve. The end of the fixture may also abutagainst this gasket.

The exterior of sleeve 3 is screw-threaded throughout, and on it isiitted the correspondingly screw-threaded insulating-jacket 5, which hasa broad circumferential ilange, 6, the inner edge ol which abuts againstthe head l cit' the inner sleeve. The insulator is also externallyscrew-threaded, which adapts it to receive the coirespondingly-threadedouter brass sleeve, T, the upper end oli which tits up under the innerpart oli the flange 6, and the lower end of which is contracted to i'ormthe above-mentioned shoulders 9 and interiorly-screw-threaded neck Sl'or the reception oi' gasfixture l is the tinted collar `for concealingthe connectors and cut-out and improving the appearance of the device.This collar has a central opening for the passage of the sleeve 7, andis fitted to the periphery of the insulator-flange and secured in placeby means of bayonet or similar joints.

l l() are supplyavires,which pass, respect .ively, thron gh apertures l?1S to connect with biiuling-scrcws 19 2O on connecting-plates 2l 22.These plates are secured tothe bottom of the flange by means ot screws2? 2i, passed through the tlange and entering correspondingly-threadedapertures in the plates. A third connecting-plate, 2S, secured by ascrew, 29, similarly to the plates 2l 22, has bindingscrews 27 SO. Frenithe biinline-screw 27 on plate 28 to a binding-screw, 25,011 plate 2l.is run the ordinary fusible cut-out wire, 2G.

are the lamp-wires, depending from binding-screws 30 3l on plates 28 and22, respectively.

ll is an insulating-bushing screwed or otherwise fastened in the collarl0. The binding-screws 30 3l are placed on opposite sides of thebushing, so that the wires passing through the latter at an angle andthen being entwined around the fixture provide an effective key toprevent the movement of the collar in either direction, and hence toprevent the disengagement of the saine from the fiange. On the otherlhand, the collar may be freely 'turned and disengaged upon the looseningof the wires slightly to relieve the tension.

While the above-specified construction may be preferable, it is obviousthat the principles of our invention are susceptible of variousmodifications of details of construction, which are to be determined bycircumstances and the nature of the place to which the deviceis to beapplied, the main object of our invention being to combine an electriccut-out with an effective insulating-joint.

Although but one lamp is described, it is Vevident that two can beconnected to the same joint on opposite sides, the only necessary changebeing the addition of a conductorplate and cut-out wire, if desired; orthe same could be effected by the simple addition of another insulatedbinding-screw, or by separating the first plate beyond the cut-out. Itmay also be desired to supply two lamps from a single pair ofconductors, as shown.

The insulators used are preferably hard rubber; but they may be of anyother suitable substance. The neck 8 of the outer sleeve may becxteriorly screw-threaded, if more convenient. The washer 34 may beremoved and the ends of the pipes may be brought together, though theconnection shown in the drawings is preferable, inasmuch as the fixtureis completely insulated from the gas-pipe, and if any leakage occurs nogroundconnection can possibly be made and the leak will therefore do noharm. It will also be noticed that the washer 34, which may be ofasbestus, soft rubber, leather, or other suitable material, will make agas-tight joint between the parts 1 2.

If it is desired, the conductors may be made n to pass through theinterior of the pipe from the cut-out. It will also be seenthat theinsulator could be used without any bracket or xture, and a cap or diskon the shoulder 9 be used to stop the flow of gas.

Having thus described our invention, the following is what we claimasnew therein and desire to secure by Letters Patent:

l. In a combined insulating-joint and cutout for electric lamps, thecombination of a gas-pipe terminal, l, sleeve 3, screwing on theterminal, insulating-jacket 5, screwing on the sleeve 3 and havingflange G, for carrying the connectors and cut-out, and outer sleeve, 7,screwing on the insulator 5 and having shoulder 9 and neck 8, thefixture 2, screwed into ders 9 and impinged by sleeve 3 and end offixture 2, the cap l0, secured to the flange 6 and having the centralopening for passage of the joint, and an eccentric opening in which isthe bushing ll, through which the lampsupplying conductors 32 33 passfrom the connectors, as hereinbefore set forth.

2. The combination, with the gas-pipe terminal l and gas-fixture 2, ofthe interposed insulating-joint and cut-out consisting of sleeve 3,screwed on the terminal, insulatingjacket 5, screwed on the sleeve andcarrying the supplywires, connectors, cutout, and lamp-wires, the outersleeve, 7, screwed 'on the insulator and supporting the gas fixtures,and cap l0, for concealing the connectors, having central opening forpassage of fixture and eccentric opening for conductors, as set forth. y

3. The combination of` a suitable support, l, sleeve 3, screwing on saidsupport, insulating-jacket 5, screwing on sleeve 3, and cap l0,surrounding the insulator, having a central opening for the joint, saidinsulator having suitable lelectrical connections and carrying thecut-out, and the lamp-conductors passing through an eccentric opening inthe cap, all substantially as herein described.

4. The combination, with the terminal 1 and gas-fixture 2, of aninsulating-jacket carried by the terminal, a sleeve carried by theinsulator and supporting the gas-fixture, and a transverse surroundingfiange, 6, formed on the insulating-sleeve and carrying the cut-out, andconnections whereby the electric lamp is connected on the opposite sideof the insulator from the terminal, as fully explained.

5. In combination with a gas-fixture sup ply-pipe, a screw-threadedinsulating-sleeve having a passage therethrough interpolated between twoportions of the fixture and having a broad insulating surrounding'flange formed integrally therewith for supporting the connections foran electric lamp, whereby a continuous passage for gas is maintainedwithout affording ground-connection for leakage.

6. In combination with a gas-fixture, an insulating-sleeve interposedbetween two parts of the fixture to completely insulate them, saidinsulator having a broad lateral insulating-fiange formed integrallytherewith, supporting the cut-out and other connectors for an elect-riclamp, as shown and described.

7. In an insulating-joint and cut-out, the combination, with aninsulating-support, 6, carrying the conductors, as' explained, andhaving a cylindrical portion for coupling the gas fixture and pipe, of-a cap, 10, having a central opening for the passage of the fixture andan opening without the center for the passage of the lamp-conductors, asexplained.

8. In a cut-out for electric lamps, the com bination, with the support8, carrying the electrical connections and lamp -supplying IOO IIO

n.) on

conductors on o, of a cap, l0, having a passage for the conductors 32 33and secured to the support by bayonet-j oints extending f rom saidrecess, the said conductors being secured to the support to one side oftheir passage through the cap, whereby upon being bent they forni aneffective stop to the movement of the cap, as explained.

9. ln a cut-out for electric lamps, the combination, with the supportcarrying the cutout wire and suitable connectors,of the lampsupplyingwires depending Jfroin the support and the cap fitting over the supportand se* cured thereto by a catch and having' an eccentric opening' forthe lampavires, the said lamp-wires being attached to the support onopposite sides of the opening through which they pass, whereby theyprevent the moyement and consequent disengagement of the cap, asexplained lO. In a combinedinsulatiugfioint and eut- HARRY M. DOUBLEDAY.RUSSELL DOUBLEDAY.

Witnesses:

RoBT. C. Moonn, GEO. L. STErHENsoN,

